The entrance to Facebook's corporate headquarters in Menlo Park, California, just north of East Palo Alto. A recent University of California at Berkeley study found the region has ‘lost thousands of low-income black households’ as the result of rising housing costs. Photo: AFP

The entrance to Facebook's corporate headquarters in Menlo Park, California, just north of East Palo Alto. A recent University of California at Berkeley study found the region has ‘lost thousands of low-income black households’ as the result of rising housing costs. Photo: AFP